Good Idea for a simple game

Okay, i know about the game on the app store called knots, so please don't tell me to download that but here is my idea:

A game like twister where there is a little spinner and you have to use one hand to try and stay on all the dots. When you pick up your finger, you lose. Two player is self-explanatory. The harder levels have smaller dots so you can't move very much.
The spinner can say "ring finger on blue" and you must follow the rules.

Differences W/ Knots:
-Knots has dots that disappear
-no scoring system, just for fun
-Knots is more about speed rather than dexterity